Welcome to OCAA

Welcome to the Ontario Commercial Arborist Association

The Ontario Commercial Arborist Association (OCAA) is a community built for the people who care for Ontario’s trees. We bring together arborists and industry professionals from across the province who share a passion for quality tree care, professional growth, and supporting one another in a constantly evolving industry.

Our membership includes climbing arborists, consulting arborists, plant health care specialists, urban forestry professionals, educators, suppliers, and business owners. No matter your role or experience level, OCAA provides a space to connect with others who understand the unique challenges and rewards of working in arboriculture.

At OCAA, we believe learning never stops. Through workshops, symposiums, networking events, and committee involvement, members gain access to education, new ideas, and meaningful conversations that help strengthen both individual careers and the industry as a whole. Just as importantly, we create opportunities to build relationships — because some of the best learning happens through shared experiences and peer support.

We also work to represent and support Ontario’s commercial arboriculture sector by encouraging best practices, promoting safety and professionalism, and fostering collaboration between industry professionals, municipalities, and partners.

Joining OCAA means becoming part of a supportive and engaged network that cares about trees, people, and the future of our profession. Whether you are just starting your career or have decades of experience, there is a place for you here.

If you’re looking to grow your knowledge, expand your network, and be part of a community that’s shaping arboriculture in Ontario, we invite you to join us!